Draw house on CAD, supply viewable editable files

I have a house i designed on paper, its 3 storeys high, split levels, I need it put on a suitable CAD system so I can edit and view it on basic inexpensive software. If editing is not possible (re arranging furniture, changing decoration) then I would need it to be viewable in some form on inexpensive software or view in IE / Chrome browser. I would supply plans as scans with dimensions.